diff --git a/tasks/main.yml b/tasks/main.yml
index b88d498..006cdf5 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -90,8 +90,7 @@
         - common-mq
         - zun-config
   when:
-    - "zun_services['zun-api']['group'] in group_names"
-    - "inventory_hostname == ((groups[zun_services['zun-api']['group']] | intersect(ansible_play_hosts)) | list)[0]"
+    - _zun_is_first_play_host
   vars:
     _oslomsg_rpc_setup_host: "{{ zun_oslomsg_rpc_setup_host }}"
     _oslomsg_rpc_userid: "{{ zun_oslomsg_rpc_userid }}"
@@ -128,8 +127,7 @@
           - username: "{{ zun_galera_user }}"
             password: "{{ zun_galera_password }}"
   when:
-    - "zun_services['zun-api']['group'] in group_names"
-    - "inventory_hostname == ((groups['zun_api'] | intersect(ansible_play_hosts)) | list)[0]"
+    - _zun_is_first_play_host
   tags:
     - always
 
@@ -169,8 +167,7 @@
         type: "{{ zun_service_type }}"
         description: "{{ zun_service_description }}"
   when:
-    - "zun_services['zun-api']['group'] in group_names"
-    - "inventory_hostname == ((groups['zun_api'] | intersect(ansible_play_hosts)) | list)[0]"
+    - _zun_is_first_play_host
   tags:
     - always
 
diff --git a/tasks/zun_post_install.yml b/tasks/zun_post_install.yml
index e7b0795..abf0da6 100644
--- a/tasks/zun_post_install.yml
+++ b/tasks/zun_post_install.yml
@@ -84,5 +84,4 @@
   become_user: "{{ zun_system_user_name }}"
   changed_when: false
   when:
-    - zun_services['zun-api']['group'] in group_names
-    - inventory_hostname == ((groups['zun_api'] | intersect(ansible_play_hosts)) | list)[0]
+    - _zun_is_first_play_host
diff --git a/vars/main.yml b/vars/main.yml
index dbfa38e..70e7953 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -13,6 +13,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+_zun_is_first_play_host: >-
+  {{
+    (zun_services['zun-api']['group'] in group_names and
+      inventory_hostname == groups[zun_services['zun-api']['group']] | select('in', ansible_play_hosts) | first) | bool
+  }}
+
 _zun_oslomsg_rpc_vhost_conf: >-
   {{
     (zun_oslomsg_rpc_vhost is string) | ternary(